GB1425037A - Optical memory device for writing in and reading out information - Google Patents

Optical memory device for writing in and reading out information

Info

Publication number
GB1425037A
GB1425037A GB2221773A GB2221773A GB1425037A GB 1425037 A GB1425037 A GB 1425037A GB 2221773 A GB2221773 A GB 2221773A GB 2221773 A GB2221773 A GB 2221773A GB 1425037 A GB1425037 A GB 1425037A
Authority
GB
United Kingdom
Prior art keywords
light
matrix
sources
passes
lenses
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB2221773A
Other languages
English (en)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Thales SA
Original Assignee
Thomson CSF SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Thomson CSF SA filed Critical Thomson CSF SA
Publication of GB1425037A publication Critical patent/GB1425037A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C13/00—Digital stores characterised by the use of storage elements not covered by groups G11C11/00, G11C23/00, or G11C25/00
    • G11C13/04—Digital stores characterised by the use of storage elements not covered by groups G11C11/00, G11C23/00, or G11C25/00 using optical elements ; using other beam accessed elements, e.g. electron or ion beam

Landscapes

  • Optical Recording Or Reproduction (AREA)
  • Printers Or Recording Devices Using Electromagnetic And Radiation Means (AREA)
GB2221773A 1972-05-12 1973-05-09 Optical memory device for writing in and reading out information Expired GB1425037A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7216999A FR2183602B1 (enrdf_load_stackoverflow) 1972-05-12 1972-05-12

Publications (1)

Publication Number Publication Date
GB1425037A true GB1425037A (en) 1976-02-18

Family

ID=9098413

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2221773A Expired GB1425037A (en) 1972-05-12 1973-05-09 Optical memory device for writing in and reading out information

Country Status (5)

Country Link
US (1) US3860917A (enrdf_load_stackoverflow)
JP (1) JPS4955346A (enrdf_load_stackoverflow)
DE (1) DE2323926A1 (enrdf_load_stackoverflow)
FR (1) FR2183602B1 (enrdf_load_stackoverflow)
GB (1) GB1425037A (enrdf_load_stackoverflow)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5511035A (en) * 1991-12-30 1996-04-23 Information Optics Corporation Optical random access memory having diffractive simplex imaging lens
US5436871A (en) * 1991-12-30 1995-07-25 Information Optics Corporation Optical random access memory having folded image
US5379266A (en) * 1991-12-30 1995-01-03 Information Optics Corporation Optical random access memory
US5926411A (en) * 1991-12-30 1999-07-20 Ioptics Incorporated Optical random access memory
US5696714A (en) * 1991-12-30 1997-12-09 Information Optics Corporation Optical random access memory
US5465238A (en) * 1991-12-30 1995-11-07 Information Optics Corporation Optical random access memory having multiple state data spots for extended storage capacity
NO303098B1 (no) * 1995-06-23 1998-05-25 Opticom As Optisk datalagringsmedium med diffraktive optiske elementer og fremgangsmÕte til skriving og lesing av data i dette
FR2755516B1 (fr) 1996-11-05 1999-01-22 Thomson Csf Dispositif compact d'illumination
FR2819061B1 (fr) * 2000-12-28 2003-04-11 Thomson Csf Dispositif de controle de polarisation dans une liaison optique

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3072889A (en) * 1955-04-20 1963-01-08 Fairchild Camera Instr Co Densitometric data handling system
US3184307A (en) * 1959-08-14 1965-05-18 Eastman Kodak Co Method and apparatus for making color prints
US3148355A (en) * 1961-12-26 1964-09-08 Ibm Storage device utilizing color film and movable filters

Also Published As

Publication number Publication date
FR2183602B1 (enrdf_load_stackoverflow) 1978-03-03
DE2323926A1 (de) 1973-11-29
FR2183602A1 (enrdf_load_stackoverflow) 1973-12-21
US3860917A (en) 1975-01-14
JPS4955346A (enrdf_load_stackoverflow) 1974-05-29

Similar Documents

Publication Publication Date Title
US4814594A (en) Updatable micrographic pocket data card
US4680459A (en) Updatable micrographic pocket data card
FR2516687B1 (fr) Enregistrement d'informations pour systeme optique de lecture et d'enregistrement
FR2313716A1 (fr) Systeme optique de lecture par reflexion d'un support d'information
FR2339928A1 (fr) Dispositif pour la lecture d'un porteur d'enregistrement presentant une structure d'information lisible par voie optique
IT1022862B (it) Struttura portante di registrazione a lettura ottica per la memoria di informazioni
FR2349911A1 (fr) Dispositif optique de commande pour faisceau de lecture d'un enregistrement
BE857364A (fr) Unite de lecture optique pour l'exploration d'un porte-enregistrement muni d'une structure d'information reflechissant du rayonnement
FR2517858B1 (fr) Enregistrement d'informations destine a etre utilise dans un systeme de lecture et d'enregistrement optique
ES8305144A1 (es) "un aparato para grabar y leer pistas de informacion en una superficie con informacion de un portador de registro".
WO1988003293A1 (en) Transmissively read quad density otpical data system
GB2032137B (en) Focussing lens servo driving device for optical information reading device
FR2565728B1 (fr) Systeme de detection d'obliquite pour lecture optique de donnees
GB1141636A (en) Improvements in or relating to methods for the photo-optical recording or reproduction of data consisting of individual symbols
US3898629A (en) Apparatus for scanning a data record medium
JPS5567722A (en) Light beam recorder
US3407405A (en) Recorder for producing composite diffraction grating pattern
FR2276660A1 (fr) Systeme optique de stockage de donnees binaires effacable selectivement et agencees par pages enregistrees holographiquement
EP0613126A4 (en) OPTICAL INFORMATION RECORDING MEDIUM AND METHOD FOR READING THE SAME INFORMATION.
CA1029130A (en) Record carrier on which information is recorded in an optical structure
GB1425037A (en) Optical memory device for writing in and reading out information
GB1408767A (en) Optical data storage devices
FR2344075A1 (fr) Dispositif de lecture optique de signaux tels que des signaux video
IT7968838A0 (it) Supporto di registrazione ottica dispositivo per la lettura di un avente una struttura d informazione atta a riflettere radiazioni
FR2293035A1 (fr) Systeme de lecture d'un enregistrement optique de donnees numeriques binaires

Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees